Finding the Third Proportional to 21,124.55 and 49,120.17

Step by Step Solution

1. Step 1: Write the proportion equation
   21,124.55 : 49,120.17 = 49,120.17 : x
2. Step 2: Convert to fraction form
   21,124.55/49,120.17 = 49,120.17/x
3. Step 3: Cross multiply
   21,124.55x = 49,120.17 × 49,120.17
4. Step 4: Simplify right side
   21,124.55x = 2,412,791,285.03
5. Step 5: Solve for x
   x = 2,412,791,285.03/21,124.55
6. Step 6: Final answer
   x = 114,217.42